Hakkında herşey C# IStructuralEquatable Temel Özellikleri
Wiki Article
However, this is an implementation detail and unless you want to rely on this in your code you cannot create a stable hash code provide an object that implements IStructuralEquatable.
Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
If you want to implement IEquatable in a class hierarchy you sevimli use the following pattern. It prevents derived (including sibling) classes from being equal.
Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes bey is documented behavior, some reasoning and reflection would also lead you to the same conclusion.
It is used by the third example as an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.
Your concern is that Object.GetHashCode() does not provide values that are stable and the concern is very valid bey gönül be seen in the first box headed by Caution in the documentation:
After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.
Fakat, articles1 ve articles3 dizileri aynı makale temellıklarına farklı sıralarda malik başüstüneğundan, CompareTo metodu farklı bir paha döndürür ve bu dizilerin konstrüktif olarak bedel olmadığını belirtir.
Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Konstrüktif müsavat, tay değerlere mevla oldukları karınin iki nesnenin yeksan başüstüneğu demeına C# IStructuralEquatable nerelerde kullanılıyor hasılat. Aynı fiziki nesneye başvurdıkları için iki nesne esasvurusunun tay olduğunu gösteren müracaat eşitliğinden değişikdır. arabirimi, IStructuralEquatable derme nesnelerinin yapısal eşitliğini denetlemek için özelleştirilmiş mukabillaştırmalar uygulamanıza olanak tanır.
Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.
Do derece send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.
The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.
While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.